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Finding the Fourth Proportional to 193,989.92, 290,967.57 and 67,608.66

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Solution

The fourth proportional to 193,989.92, 290,967.57 and 67,608.66 is: 101,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,989.92 : 290,967.57 = 67,608.66 : x
  2. Step 2: Convert to fraction form
    193,989.92/290,967.57 = 67,608.66/x
  3. Step 3: Cross multiply
    193,989.92x = 290,967.57 × 67,608.66
  4. Step 4: Simplify right side
    193,989.92x = 19,671,927,511.16
  5. Step 5: Solve for x
    x = 19,671,927,511.16/193,989.92
  6. Step 6: Final answer
    x = 101,406.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.